I recently bought my June 2000 A3 8L 1.6 SE which only came supplied with 1 key, so following advice from threads on here I got myself a new key and remote from ebay and got it cut and coded in to the immobiliser, so I know at least have my SKC.

Here's the strange part I have tried all the methods I can find online to sync both remotes as both keys will open and start the car; both remotes will work to lock and unlock the car but only one of them at once will work when I try syncing them to the car if I try and get the other one working it knocks the other one off etc. Anyone got any good ideas, or if it needs doing with vcds or vag-com anyone in or around Chorley Lancashire that could help?